Within 1 month posttransplant, he developed deranged, predominantly cholestatic pattern liver function tests. Laboratory parameters showed total bilirubin of 1.12 mg/dL, alanine aminotransferase of 553 IU/L, gamma-glutamyltransferase of 624 IU/L, and tacrolimus level of 10.2 ng/mL. After thorough ...